<div id="tagCanvasContainer">
    <canvas id="tagCanvas" height="300px">
        <p>标签云</p>
    </canvas>
</div>
<div id="tags">
    <ul>
        {% for url,label in tags %}
        <li><a href="{{url}}" target="_blank">{{label}}</a></li>
        {% end %}
    </ul>
</div>